212 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
gently sloping; aperture beautifully iridescent, subrotund; peristome not 
continuous, with outer margin thin, with thickened columella, white, re¬ 
flexed. (T ranslation.) 
Type in British Museum. Type locality, Arctic. 
Range. Arctic Ocean, Plover Bay, Commander Islands, and Petrel 
Bank, Bering Sea. 
Described as Valvatella. 
Margarites albolineatus E. A. Smith, 1899 
Plate 99, figs. 4, 5 
Proceedings of the Malocological Society of London , 3:206; fig. 2. Dali, Bulletin 112, 
United States National Museum; PI. 16, figs. 3, 4. 
Testa depressa, suborbicula, imperforata, rosacea, linis albis filiformi- 
bus volventibus numerosis picta, tenuis, nitida; spira brevis; anfractus 5, 
celeriter accrescentes, convexi, lineis incrementi obliquis tenuissimis in- 
distincte striati; apertura magna, rotundata, intus pulcherrime iridescens; 
peristoma tenue, margine columellari albo incrassato reflexo, umbilicum 
quasi obtegente. Diam. maj., 8; min. 6; alt., 4.5 mm. (E. A. Smith.) 
Shell depressed, suborbicular, imperforate, rosy and ornamented with 
numerous revolving filiform white lines, thin, polished; spire short; five 
whorls, increasing rapidly, convex, striated indistinctly with very fine 
oblique lines of growth; aperture large, rotund, inside very beautifully iri¬ 
descent; peristome thin, with white columellar margin thickened and 
reflexed, almost touching the umbilicus. (Translation.) 
Type in British Museum? Type locality, Bering Sea. 
Range. All coasts of Bering Sea. 
Described as Valvatella. 
Margarites pribiloffensis Dali, 1919 
Proceedings of the United States National Museum, 56:366. 
Shell small, solid, trochiform, pale straw color, with a small glassy 
nucleus and about five and a half subsequent well-rounded whorls; suture 
distinct, slightly appressed; surface dull, with fine incremental lines 
crossed by extremely fine spiral striae; base well-rounded with a deep, not 
funicular umbilicus, aperture rounded, simple, the outer lip produced at 
the suture and united with the pillar by a thin glaze of enamel over the 
body, the pillar lip a little thickened, not reflected; operculum brownish 
with eight or more turns; larger diameter, 8.5; shorter diameter, 7; 
height, 8 mm. (Dali.) 
[8141 
